THERMAL EXPANSION STUDIES ON TNT

Abstract

Coefficients of thermal expansion for the three crystallographic axes of alpha-TNT were determined. The coefficient for the intermediate and long axes is about 0.00005 in./in./deg. C, and that for the short axis averages about four times this value. The thermal expansion along the short axis showed marked changes at temperatures from 55 to 65C. Plastic flow was observed along the intermediate and long axes at temperatures 8 or 9C below the melting point. Little or no flow was noted along the short axis. These observations indicate that TNT crystals have anisotropic physical properties. Thermal-shock experiments showed that fracture occurs along the short axis perpendicular to the long axis. Heating curve data did not uncover an energy change for TNT below the melting point.

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Document Details

Document Type
Technical Report
Publication Date
Aug 24, 1950
Accession Number
AD0657640

Entities

People

  • Robert W. Van Dolah
  • William Roderick Eubank

Organizations

  • Naval Air Weapons Station China Lake

Tags

Communities of Interest

  • Counter IED
  • Energy and Power Technologies
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Calibration
  • Climate Change
  • Coefficients
  • Connecting Rods
  • Crystal Lattices
  • Elastic Properties
  • Explosives
  • Flow
  • Materials
  • Materials Science
  • Measurement
  • Melting Point
  • Physical Properties
  • Plastic Flow
  • Silica Glass
  • Thermal Conductivity
  • Thermal Expansion

Readers

  • Agricultural Chemistry/Soil Science
  • Mechanical Engineering/Mechanics of Materials.
  • Thermal Physics or Thermal Science.